Fix properties

Delete data key, because properties must be in root of contact key

src/SmartEmailing.php

@@ -217,7 +217,7 @@ public function importContact($email, array $contactLists = NULL, array $propert
 
 		if (is_array($properties)) {
 			foreach ($properties as $name => $value) {
-				$contact['data'][$name] = $value;
+				$contact[$name] = $value;
 			}
 		}